US554701A - Shutter-lock - Google Patents

Description

F. KRUPP.

No. 554,701. Patented Feb. 18, 1896.

NITED STATES FRANK KRUPP, OF NEWV ORLEANS, LOUISIANA.

SHUTTER-LOCK.

SPECIFICATION forming part of Letters Patent No. 554,701, dated February 18, 1896.

Application filed December 5, 1895. Serial No. 571,146. (No model.)

To all whom it may concern: I

Be it known that I, FRANK KRUPP, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Blind and Shutter Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to looks for blinds or shutters and sliding window-sashes, and it is designed more particularly as an improvement upon the lock disclosed in my application filed June 3, 1895, and serially numbered 551,546.

The general object of my present invention is to provide, in conjunction with a keeperplate having an elongated opening and adapted to be connected to a shutter or to a window-casing, a slidable and rotatable lockingbolt adapted to be arranged in a sill-frame or in a sash and having a head adapted to pass through the hole in the keeper-plate and when turned to engage said keeper-plate, a simple and compact device adapted to hold the bolt in such position that its head will pass through the opening in the keeper and plate, and a device adapted when a shutter or a sash is to be locked to move the bolt forward and turn it soas to secure its head on the inside of the keeper-plate, and when the shutter or the sash is to be unlocked to first turn the bolt and then move it endwise, so as to withdraw its head through the opening in the keeperplate.

With the foregoing end in view the invention will be fully understood from the following description and claims, when taken in connection with the annexed drawings, in which Figure 1 is a vertical section illustrating a portion of a window-casing and a shutter or blind equipped with my improvements with the locking-bolt in the position it is caused to assume to lock the blind or shutter in its closed position. Fig. 2 is a horizontal section taken in the plane indicated by the line 00 a: of Fig. 1. Fig. 3 comprises disconnected perspective views of the locking-bolt and the eccentric cam-gear for moving said bolt longitudinally and partially rotating the same. Fig. 4 is a detail perspective view of the illner guide for the locking-bolt, which serves to hold the bolt against turning during its endwise movements. Fig. 5 comprises disconnected perspective views of the parts which form the outerv guide for the lockingbolt and also form a stop for limiting its inward movement, and Fig. 6 is a vertical section illustrating the manner in which my improvements are applied to look a sash.

Referring by letter to said drawings, and more particularly to Figs. 1 to 5 thereof, A indicates a window-sill.

B indicates a shutter or blind which may be suitably adapted to hold its fellow shutter when the shutters or blinds are closed, so that said fellow shutter cannot be opened until said shutter B is opened.

- 0 indicates a recess which is formed in the inner side of the shutter B.

D indicates a countersunk plate which is secured by screws or the like in the shutter B over the recess 0, and is provided with an elongated slot E, for a purpose presently described.

F indicates a groove or way which is formed in the sill A, and extends to the outer edge of said sill, as shown, and G indicates a pocket or recess which is formed in the sill at the inner end of the way F, as shown. The way or groove F has its outer end closed by the casting 61, having the vertical slot Z), and also having the upper and lower extensions 0 and the casting d, which is countersunk in the outer edge of the sill A and secured thereto, and is provided with an elongated slot 6, which extends at right angles to that of the casting a, and is also provided with recesses f to receive the extensions 0 of the casting a, as shown.

H indicates the locking-bolt of my improved lock, which is provided at its outer end with a T-head g, which is preferably beveled, as shown,-so as to facilitate its passage through the slot E of the keeper-plate D. The slot e of the casting b is disposed at right angles to the slot 6 of the casting d, as shown, in order to limit the movement of the locking-bolt in the direction of the arrow in Fig. 1, and a guidecasting 1, having a depending portion t, is provided adjacent to the recess G, which guide supports the bolt in its sliding movements and enables it to slide freely and at the same time holds the bolt against turning during its sliding movements, as will be presently described. The locking-bolt II is generally of a circular form in cross-section but it is provided at an intermediate point of its length with a portion 1, which is of rectangular form in cross-section, and is designed to move in the depending portiont of guide i, so as to prevent the bolt from turning during its sliding movements, and is also preferably inclined, as shown, so as to enable the bolt to slide more freely when it is drawn out of engagement with the keeper-plate 1').

\Vithin the recess or pocket G the bolt II is provided with a segmental gear J having three (more or less) teeth, as shown, and at its inner end said bolt is provided with an angular projection K. The said gear J and projection K are designed for the engagement of the eccentric cam-gearM. (Better illustrated in Fig. This eccentric cam-gear has teeth j upon its periphery designed to engage the teeth of the gear J, and it is arranged between said gear and the projection K, and is carried by a stem 7t which is journaled in the bottom of a casting N secured upon the sill A, and is provided at its upper end an d within said casting N with a thumb-piece P.

Q indicates a swinging cover which is pivotally mounted on the casting N, and is designed to be swung over the said casting to exclude dust from the same, and is also adapted to be swung oft of the casting when it is desired to manipulate the lock-bolt through the medium of the thumb-piece P.

The locking-bolt II is shown in Figs. 1 and 2 with its head secured in the recess 0 and the teeth of the eccentric cam-gear M engaging its gear J. Now when the eccentric camgear is turned in the direction as indicated by arrow in Fig. 2 it will turn the lockingbolt so as to bring the head 9 into alignment with slot E in plate D, and its cam portion acting against the projection K will move the locking-bolt in the direction indicated by an row until its head 9 rests in the slot 6 of the casting d. \Vhen the shutters are closed and it is desired to lock the same, the eccentric cam-gear is turned in a direction opposite to that indicated by arrow in Fig. 2, when its cam portion acting against the side of the gear J will move the bolt in the direction opposite to that indicated until the bolt-head g rests within the shutter-recess 0, when the teeth on the gear will engage the teeth of gear J, and will turn the bolt so as to carry the bolt-head to a position at right angles to the slot in plate D and secure it in the recess C.

During the sliding movement of the bolt H in both directions it will be observed that its angular portion I will rest in the depending portion 25 of the guide '5, and will effectually prevent turning of the bolt. In consequence of this it will be appreciated that the head g will pass freely through the slot E inplate D in both directions.

In Fig. 6 of the drawings I have illustrated a slightly-modified form of my invention applied so as to enable it to lock awindow-sash in its closed position. I11 this construction a plate D similar to the plate I) before described, is secured over a recess 0 in the window-sill A, and the castings a (Z, which are similar to those before described, and the guide 1:, which is also similar to that before described, are arranged in the window-sash F, said parts, however, being disposed to suit the locking-bolt II, which is vertical or approximately vertical, and is provided with the portion 1 of rectangular form in cross-section, designed to engage the guide 1', the gearsegment J, and the angular projection K. A recess G is also provided in the sash T for the reception of the gear-segment J and K. In this recess is also arranged the eccentric camgear M, which is carried by a stem k, which is journaled in a plate N, and has a thumb-piece P at its outer end and is designed to be turned in the same manner to move the bolt H that the eccentric cam-gear M is turned to move the bolt II.

It will be appreciated from the foregoing that my improved lock is very simple and cheap and is equally applicable for locking shutters or window-sashes. \Vhen my improvements are employed for the former purpose it will be observed that the shutters can only be uni'astened by a person 011 the inside of the window and cannot be opened by cutting away a slat and reaching in the hand as can be other shuttcr-fastenings usually employed.

Having described my invention, what I claim is- 1. A lock for shutters and window-sashes comprising a keeper adapted to be secured to a shutter or window-casing and having an elongated slot, a locking-bolt adapted to be arranged in suitable guides on a window-sill or on a Window-sash and having a T-head at one end and also having a gear-segment at an intermediate point of its length and a projection at its opposite end, and an eccentric camgear arranged between the gear-segment and the proj ection on the locking-bolt and having teeth adapted to engage the gear of the locking-bolt and also having a stem journaled in a suitable bearing and a thumb-piece on said stem, substantially as and for the purpose set forth.

2. A lock for shutters and window-sashes comprising a keeper adapted to be secured to a shutter or window-casing and having an elongated slot, a locking-bolt adapted to be arranged in suitable guides on a window-sill or on a window-sash and having a T-hcad at one end, a gear-segment at an intermediate point of its length and a projection at its opposite end and also having an intermediate portion of angular form in cross-section, a guide receiving said angular portion of the bolt so as to prevent the bolt from turning during its endwise movements and an eccentric camgear arranged between the gear-segment and the projection on the locking-bolt and having teeth adapted to engage the gear of the locking-bolt and also having a stem journaled in a suitable bearing and a thumb-piece on said stem, substantially as specified.

3. A look for shutters, window-sashes and the like, comprising a keeper having an elongated slot, a bolt having a T-head adapted to engage the keeper-plate and also having a gear at an intermediate point of its length and a projection, and an eccentric cam-gear arranged between and adapted to engage the gear and projection of the bolt and having teeth adapted to engage the teeth of said gear of the bolt; said cam-gear being adapted to be turned, substantially as and for the purpose set forth.

4C. In the shutter-lock described the combination of a window-casing having a passage formed in it and a recess at the innerend of said passage,a guide-bearing closing the outer end of said passage, a guide 11, also arranged in the passage, the locking-bolt having the T- head at its outer end and the body portion arranged in the passage and recess in the window-casing and provided at an intermediate point of its length with the angular portion engaging the guide 1', and also provided with the gear and the projection, the eccentric camgear arranged between and adapted to engage the gear and projection of the bolt and havin g a stem j ournaled in a suitable bearing and provided with a finger-piece, and a shutter having a recess in its inner side and a plate covering said recess and provided with an elongated slot, substantially as and for the purpose set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

FRANK KRUPP. Witnesses:

WM. F. KAISER, JOHN MULLER.

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